Install OpenCV for Python

It's simple and convenient.

[command]
pip install opencv_python

How to solve MSI GS60 2PE Ghost Pro Bluetooth issue [win10]

Don't use Windows 10 built-in driver!
For the reason that Bluetooth devices would be disconnected while Wi-Fi getting busy.
It's recommended to install Intel official drivers for "Intel® Dual Band Wireless-AC 7260".
Please install both of Wi-Fi and Bluetooth drivers.

[Link]
https://www.intel.com/content/www/us/en/support/articles/000005559/network-and-i-o/wireless-networking.html

Free DVD to MP4 converter

It's a freeware with simple and friendly UI.

[Link]
https://www.videohelp.com/software/VidCoder

截然不同

每天搭乘區間車通勤，總是能觀察許多人事物，今天看見二對母女不同的互動，產生不同的感 觸。

這二對母女看起來年齡相似，女兒都是學齡前兒童，約5、6歲。
母女A在座位上數三位數數字，似乎是從100數到300，母親說單數，女兒說雙數，過程中母親的眼神一直停留在女兒身上，女兒也感受到母親的關愛，時而躺臥在母親腿上，時而擁入母親懷裡，每到該進位時，例如268算到270，女兒似乎會稍微卡頓，回答不出來，母親只是笑著看她，女兒不久想到答案，也開心地對母親笑。

而一旁的母女B，坐在背對母女A的座位上，母親眼神專注看著手機，女兒則是轉過身來看著母女A，一臉懵懂又好像若有所思，不久便回過頭來看著母親，母親仍然盯著手機，手指動個不停，女兒趴在母親腿上，像是在撒嬌，似乎希望引起母親的注意，但母親仍然盯著手機，手指動個不停，女兒失望的坐起來，正好列車到浮州站，女兒問母親是不是到站了，母親僅回了一句還沒到，又盯著手機，手指動個不停，女兒站起來趴在窗邊，面無表情地看著滴落在玻璃上的毛毛細雨，就這樣到了南樹林站，女兒坐下來，一手抓住母親的手機，吵著說她也要玩，母親拒絕，要女兒乖乖坐好。女兒默默坐著盯著窗外，臉上沒有笑容。

你必須追尋生命而且擁抱生命，當你如此做了。有時候生命也會回過頭來擁抱你，而這經驗卻是你無法想像的。 - 最後十四堂星期二的課 果陀劇場

2017.05.19

Impressive theme Paper

It's really impressive theme for Linux Mint.


[command]
sudo add-apt-repository ppa:snwh/pulp
sudo apt-get update
sudo apt-get install paper-icon-theme
sudo apt-get install paper-gtk-theme
sudo apt-get install paper-cursor-theme

[reference]
https://snwh.org/paper

Auto mount nfs on Linux/Debian

I am used to running a couple of virtual machines at the same time on my PC and I need to share files with each VMs. Therefore, I utilize nfs to meet my requirement. Notice that it doesn't have much security considering.

Install nfs server:

[command]
sudo apt-get install nfs-kernel-server nfs-common
mkdir /home/hubert/workspace
chmod -R 777 /home/hubert/workspace/
vi /etc/exports


[modify]
/home/hubert/workspace 192.168.56.8(rw,sync,no_root_squash,no_all_squash)

# Please replace 192.168.56.8 with your own client IP address.
save, refresh, and restart nfs
[command]
sudo exportfs -r
sudo /etc/init.d/nfs-kernel-server restart

---------------------------------------------------------------

Configure nfs client:

[command]
sudo apt-get install nfs-commom
mkdir -p /media/hostshare


test it manually, please replace 192.168.56.1 with your own host IP address.

[command]
mount -t nfs 192.168.56.1:/home/hubert/workspace  /media/hostshare


auto mount nfs:

[command]
sudo vi /etc/fstab

[modify]
192.168.56.1:/home/hubert/workspace    /media/hostshare  nfs  defaults 0 0

# Please replace 192.168.56.1 with your own host IP address.
save and restart your VM to check it works or not.

Modify network settings under command line on Linux / Debian.

It tells you how to modify network settings under command line on Linux / Debian.

[command]
vi /etc/network/interfaces

[modify]
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

auto eth1
iface eth1 inet static
address 192.168.56.100
netmask 255.255.255.0
gateway 192.168.56.1

---------------------------------------------------------------

restart network and apply the settings.
[command]
/etc/init.d/networking restart

Install LINE on Linux Mint 18.1 via wineHQ

It tells you how to install LINE windows version on Linux Mint 18.1.

Install wineHQ
[command]
sudo add-apt-repository ppa:wine/wine-builds
sudo apt-get update
sudo apt-get install winehq-devel


Install winetricks and run it
[command]
sudo apt-get install winetricks
winetricks


Follow these steps:
1. What do you want to do?
-> Select the default wineprefix -> OK

2. What would you like to do to this wineprefix?
-> Install a Windows DLL or component -> OK

3. Which package(s) would you like to install?
-> vcrun2008 -> OK

4. It might take some time to install few necessary packages.

5. Close winetricks window.

6. Please download the LINE App from the official website https://line.me/ .

7. Click mouse right button on LineInst.exe .

8. select Open with -> Wine Windows Program Loader.

9. Install and run it.

HTTrack Debian Packages

HTTrack 砍站軟體 for Linux


Install full GUI version.
[command]
apt-get update
apt-get install webhttrack

Install commandline version only.
[command]
apt-get update
apt-get install httrack


[reference]
http://debian.httrack.com/

Very good Text Editor for Linux -- Notepadqq

It's recommended to install notepadqq on your Linux if you like to use notepad++ on Windows.

[command]
sudo add-apt-repository ppa:notepadqq-team/notepadqq
sudo apt-get update
sudo apt-get install notepadqq

How to change the fonts after install Chinese language package

Before install Boshiamy input method, we must install Trad-Chinese language package first. However, the fonts would be changed to ukai/uming. Therefore, remove them could solve this problem.

[command]
sudo apt-get remove fonts-arphic-ukai
sudo apt-get remove fonts-arphic-uming


[reference]
https://www.ptt.cc/bbs/Linux/M.1408882475.A.A93.html

過於冷漠

今天在台北車站第11號車廂位置，往捷運方向的樓梯移動時，人潮眾多所以我低著頭小心翼翼地注視階梯慢慢走，發現右邊男子一直側著臉往我的方向看，便抬頭看他，結果他是直盯著我左邊的女生大腿看，女生穿著超短短裙，露出一雙纖細嫩白的美腿，難怪男子看得目不轉睛直到出了票閘還在看。 女生出了票閘後往左走，男子則是往右走向捷運站的票閘，仍不斷回頭找尋女生的蹤影，男子突然停下腳步視線看向左邊，原來女生從另一個捷運票閘進來，男子伺機跟在她身後搭上電扶梯，而我不以為意從電扶梯左側快速通過，在我排隊的位置正好可以看見電扶梯的情況，女生下電扶梯後往旁邊走幾步便停下排隊，而男子跟在其身後仍死盯著女生雙腿看，上捷運後... 我思考了一下：

剛開始是認為女生穿著過於曝露的服裝，本來就容易吸引色狼靠近，在穿這種衣服前，就要自己承擔風險，所以不予理會。

後來再想想，如果我適時的提醒女生，或許可以讓她有所警覺，但該怎麼做呢? 如何讓女生防範，然後色狼不會日後報復我?

想來想去，得到的結論，就是用手機寫上「小心色狼」的字出示給女生看，然後不要讓男子看到即可。

#只有想沒有做
#冷漠是罪
#雞婆一點社會更溫暖

最喜歡的Python 開發套件 with VIM

個人非常喜歡fisadev所採用的套件及配色.

[reference]
http://fisadev.github.io/fisa-vim-config/

監控CPU使用率 script

計算CPU負載的script，將第14行的 ${c...@]}改成 ${CPU[@]} ，存檔後 chmod +x 即可。


[reference]
http://www.mail-archive.com/linuxkernelnewbies@googlegroups.com/msg01690.html

在Linux Mint 安裝嘸蝦米輸入法 -- Fcitx

Linux Mint 18.1 安裝嘸蝦米輸入法

若非中文語系，務必先安裝Chinese Language Package，並選擇Fcitx為輸入法工具，再至Control Center 內的Fcitx configure將Boshiamy 加進對應的語系(例如: English)。

[command]
sudo apt install fcitx-table-boshiamy

安裝後，建議先登出，再至螢幕右下角小鍵盤(小企鵝)處切換，或開啟輸入法設定視窗檢視即可。 Ctrl + Space Bar 亦可。

[link]

嘸蝦米輸入法影音教學光碟 (附完整章節清單，可快速跳轉)

https://youtu.be/Fu-1ePJbV4U

Create cronjob for specific user.

It tells how to create cronjob for specific user.

Please modify /etc/crontab directly if use the user column for cronjob.

  */5 * * * * hubert /path/to/MyRoutineProc.sh  

[command]
sudo vi /etc/crontab

---------------------------------------------------------------

Please use -u option to assign cronjob for specific user.

[command]
sudo crontab -u USERNAME -e

[reference]
http://stackoverflow.com/a/30445074

Install/setup Apache Web Server

It tells you how to install and setup Apache web server via apt-get utility.

[command]
sudo apt-get install apache2

---------------------------------------------------------------

Disable default site if necessary.

[command]
sudo a2dissite default
sudo a2dissite default-ssl
sudo service apache2 reload
sudo service apache2 restart

---------------------------------------------------------------

Enable your website (e.g. hubert.cc).

[command]
sudo a2ensite hubert.cc
sudo service apache2 reload
sudo service apache2 restart

Import/Export SQL file under command line

It tells how to import/export SQL file under command line.

Import SQL file.

[command]
mysql -u USERNAME -p DATABASE_NAME < SQL_FILE_NAME
---------------------------------------------------------------

Export SQL file.

[command]
mysqldump -u USERNAME -p DATABASE_NAME > SQL_FILE_NAME

Install MariaDB on Debian or Linux

It tells how to install MariaDB via apt-get utility.

[command]
sudo apt-get install python-software-properties
sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xcbcb082a1bb943db
sudo add-apt-repository 'deb [arch=amd64,i386] http://ftp.ubuntu-tw.org/mirror/mariadb/repo/10.1/debian wheezy main'
sudo apt-get update
sudo apt-get install mariadb-server

[reference]
https://downloads.mariadb.org/mariadb/repositories/#mirror=ossplanet&distro=Debian&distro_release=wheezy--wheezy&version=10.1

Set permission (hosts.allow / hosts.deny)

It tells how to allow/deny the specific networks to access the services of Debian or Linux.

Modify hosts.allow to add white-list.

[command]
sudo vi /etc/hosts.allow

[modify]
Add the following settings.

# only allow 192.168.56.1 - 254 to access OpenSSH service
sshd: 192.168.56.0/255.255.255.0

---------------------------------------------------------------

Modify hosts.deny to add black-list.

[command]
sudo vi /etc/hosts.deny

[modify]
Add the following settings.

# deny any network to access OpenSSH service
sshd: ALL

Remove useless services

Remove useless services(e.g. avahi, cups) from Debian or Linux if necessary.

[command]
apt-get remove avahi-daemon avahi-utils cups

[reference]
https://bullyvard.wordpress.com/2012/02/05/remove-cups-avahi-daemon-and-apparmor-from-ubuntu/

Add a sudo user

It tells you how to add a sudo user.

[command]
sudo adduser hubert
sudo usermod -aG sudo hubert

Install OpenSSH

It tells you how to install OpenSSH via apt-get utility.

[command]
sudo apt-get install openssh-server

Don't forget to deny root login.

[command]
sudo vi /etc/ssh/sshd_config

[modify]
::: Before :::
PermitRootLogin yes

::: After :::
PermitRootLogin no

Boot in text mode

It tells you how to by default boot in text mode for Debian or Linux.

[command]
sudo vi /etc/default/grub

[modify]
::: Before :::
GRUB_CMDLINE_LINUX_DEFAULT="quiet"
#GRUB_CMDLINE_LINUX="text"
#GRUB_TERMINAL=console

::: After :::
#GRUB_CMDLINE_LINUX_DEFAULT="quiet"
GRUB_CMDLINE_LINUX="text"
GRUB_TERMINAL=console
---------------------------------------------------------------

Update grub to apply the new settings.

[command]
sudo update-grub

Reboot Debian to check result.

[reference]
http://ask.xmodulo.com/boot-into-command-line-ubuntu-debian.html

台南火車站趣事

饑腸轆轆的我，在第一月臺吃著美味的臺鐵便當。第二月臺停著往潮州的南下自強號，鈴聲響起，催促著未上車的旅客加快腳步。此時剪票閘門衝出了一道人影，是個約莫五十來歲的大叔，匆匆忙忙的找了一個壯年男子搭問「請問往斗六的車在哪裡搭車？」，壯年理著平頭臉上紅潤似乎帶著酒氣，頂著中氣十足的嗓音說「第二月臺，那輛自強號就是了」 大叔有些遲疑，又確認了一次「那輛自強號有到斗六嗎？上面寫到潮州捏？」 壯年十分肯定的說「對啦~ 會經過斗六，快發車了，你要趕快走地下道衝過去了。」 大叔向男子道謝後拔腿狂奔，透過車窗清楚看到，大叔趕在最一刻搭上了往潮州的列車，列車緩緩開走消失在遠方，我則愣住看著壯年， 壯年擺著一副像日行一善得意洋洋的跩樣看著我 (*˘︶˘*)

#斗六在台南北邊
#搭北上的火車到斗六比較快
#問臺鐵站務人員比較準確
#大叔今晚會在潮州過夜嗎

後記:
當壯年男子和我四目相交時，我抬頭示意要他看第一月臺的指示牌，上頭清楚寫著往斗六的北上區間車準點進站，他臉頰的紅潤瞬間擴散到整個頭部，當下我有些擔心他會惱羞成怒，幸好他很快就走掉了 (´･_･`)